Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2
The goals of the IGAC Aerosol Characterization Experiments (ACE) are to determine and understand the properties and controlling processes of the aerosol in a globally representative range of natural and anthropogenically perturbed environments. ACE-1 was conducted in the remote marine atmosphere sou...
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ftleibnizopen:oai:oai.leibnizopen.de:w0GVhIgBdbrxVwz6yR-g 2023-06-18T03:42:11+02:00 Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 Bates, Timothy S. Quinn, Patricia K. Covert, David S. Coffman, Derek J. Johnson, James E. Wiedensohler, Alfred 2016 application/pdf https://doi.org/10.34657/752 https://oa.tib.eu/renate/handle/123456789/427 eng eng Milton Park : Taylor & Francis CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ Tellus B: Chemical and Physical Meteorology, Volume 52, Issue 2, Page 258-272 ACE 1 ACE 2 aerosol property boundary layer comparative study marine atmosphere physical property research program shipborne measurement 550 article Text 2016 ftleibnizopen https://doi.org/10.34657/752 2023-06-04T23:14:52Z The goals of the IGAC Aerosol Characterization Experiments (ACE) are to determine and understand the properties and controlling processes of the aerosol in a globally representative range of natural and anthropogenically perturbed environments. ACE-1 was conducted in the remote marine atmosphere south of Australia while ACE-2 was conducted in the anthropogenically modified atmosphere of the Eastern North Atlantic. In-situ shipboard measurements from the RV Discoverer(ACE-1) and the RV Professor Vodyanitskiy(ACE-2), combined with calculated back trajectories can be used to define the physical properties of the sub-micron aerosol in marine boundary layer (MBL) air masses from the remote Southern Ocean, Western Europe, the Iberian coast, the Mediterranean and the background Atlantic Ocean. The differences in these aerosol properties, combined with dimethylsulfide, sulfur dioxide and meteorological measurements provide a means to assess processes that affect the aerosol distribution. The background sub-micron aerosol measured over the Atlantic Ocean during ACE-2 was more abundant (number and volume) and appeared to be more aged than that measured over the Southern Ocean during ACE-1. Based on seawater DMS measurements and wind speed, the oceanic source of non-sea-salt sulfur and sea-salt to the background marine atmosphere during ACE-1 and ACE-2 was similar. However, the synoptic meteorological pattern was quite different during ACE-1 and ACE-2. The frequent frontal passages during ACE-1 resulted in the mixing of nucleation mode particles into the marine boundary layer from the free troposphere and relatively short aerosol residence times. In the more stable meteorological setting of ACE-2, a significant nucleation mode aerosol was observed in the MBL only for a half day period associated with a weak frontal system. As a result of the longer MBL aerosol residence times, the average background ACE-2 accumulation mode aerosol had a larger diameter and higher number concentration than during ACE-1. The sub-micron ... Article in Journal/Newspaper North Atlantic Southern Ocean LeibnizOpen (The Leibniz Association) Southern Ocean |
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Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
ACE 1 ACE 2 aerosol property boundary layer comparative study marine atmosphere physical property research program shipborne measurement 550 |
spellingShingle |
ACE 1 ACE 2 aerosol property boundary layer comparative study marine atmosphere physical property research program shipborne measurement 550 Bates, Timothy S. Quinn, Patricia K. Covert, David S. Coffman, Derek J. Johnson, James E. Wiedensohler, Alfred Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 |
topic_facet |
ACE 1 ACE 2 aerosol property boundary layer comparative study marine atmosphere physical property research program shipborne measurement 550 |
description |
The goals of the IGAC Aerosol Characterization Experiments (ACE) are to determine and understand the properties and controlling processes of the aerosol in a globally representative range of natural and anthropogenically perturbed environments. ACE-1 was conducted in the remote marine atmosphere south of Australia while ACE-2 was conducted in the anthropogenically modified atmosphere of the Eastern North Atlantic. In-situ shipboard measurements from the RV Discoverer(ACE-1) and the RV Professor Vodyanitskiy(ACE-2), combined with calculated back trajectories can be used to define the physical properties of the sub-micron aerosol in marine boundary layer (MBL) air masses from the remote Southern Ocean, Western Europe, the Iberian coast, the Mediterranean and the background Atlantic Ocean. The differences in these aerosol properties, combined with dimethylsulfide, sulfur dioxide and meteorological measurements provide a means to assess processes that affect the aerosol distribution. The background sub-micron aerosol measured over the Atlantic Ocean during ACE-2 was more abundant (number and volume) and appeared to be more aged than that measured over the Southern Ocean during ACE-1. Based on seawater DMS measurements and wind speed, the oceanic source of non-sea-salt sulfur and sea-salt to the background marine atmosphere during ACE-1 and ACE-2 was similar. However, the synoptic meteorological pattern was quite different during ACE-1 and ACE-2. The frequent frontal passages during ACE-1 resulted in the mixing of nucleation mode particles into the marine boundary layer from the free troposphere and relatively short aerosol residence times. In the more stable meteorological setting of ACE-2, a significant nucleation mode aerosol was observed in the MBL only for a half day period associated with a weak frontal system. As a result of the longer MBL aerosol residence times, the average background ACE-2 accumulation mode aerosol had a larger diameter and higher number concentration than during ACE-1. The sub-micron ... |
format |
Article in Journal/Newspaper |
author |
Bates, Timothy S. Quinn, Patricia K. Covert, David S. Coffman, Derek J. Johnson, James E. Wiedensohler, Alfred |
author_facet |
Bates, Timothy S. Quinn, Patricia K. Covert, David S. Coffman, Derek J. Johnson, James E. Wiedensohler, Alfred |
author_sort |
Bates, Timothy S. |
title |
Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 |
title_short |
Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 |
title_full |
Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 |
title_fullStr |
Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 |
title_full_unstemmed |
Aerosol physical properties and processes in the lower marine boundary layer: A comparison of shipboard sub-micron data from ACE-1 and ACE-2 |
title_sort |
aerosol physical properties and processes in the lower marine boundary layer: a comparison of shipboard sub-micron data from ace-1 and ace-2 |
publisher |
Milton Park : Taylor & Francis |
publishDate |
2016 |
url |
https://doi.org/10.34657/752 https://oa.tib.eu/renate/handle/123456789/427 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_source |
Tellus B: Chemical and Physical Meteorology, Volume 52, Issue 2, Page 258-272 |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.34657/752 |
_version_ |
1769008048058138624 |